[REL] Formula Student Electric(Elita)

R

rysim abd

Registered
10.jpg

Elita is a formula student car produced by WUTE Racing Team and participated in Formula Student Electric China(FSEC) 2023.

This mod is built from scratch using CAD model and physic data from the racing team.

Credits:

Orginal Car Data: WUTE Racing Team
Model Rebuild, PBR textures: S.Victor
Car and Helmet skin: S.Victor
Physics: rysim
Sound(Beta): rysim
Test: S.Victor , WUTE Racing Team members

Special thanks to redapg for helping solve some tricky issues and Coutie for packaging.

Misc features:
- Press "headlights" hotkey to enable simulation of TSAL flashing lights.


Workshop : https://steamcommunity.com/sharedfiles/filedetails/?id=3434996827&searchtext=



About:

As for the graphics,as you can see,S.victor did a very great job and paid attention to many insane details while I’m struggling with the physics.Massive thanks to him for nailing the visual part—the car looks freaking awesome.

In regard to the physics side,I'm a greenhand and still learning in making physics.There are almost all data that I need available from my racing team(Chassis:we have hardpoints,Aero:we even have wind tunnel test data for this car)

As for the ffb strength,you can increase your car specific strength setting until the wheel has a little bit vibration around the center.

I'm willing to get some feedback and technical support and things can hopefully be improved.

Thanks
rysim

9.jpg



8.jpg
 
Last edited:
I saw it pop up on Steam yesterday and installed it. It's a great looking car! I only had time for a couple laps at one of the karting tracks, and it's a tricky car to drive. It'll be fun to figure it out! Congrats on the release
 
Agree with @Chris Lesperance, it's a very refreshing and fun experience with this vehicle, especially with the Luogang Park Autocross mod.

@rysim abd has done a really great job with the physics. It's not fully mentioned in the post, but he actually built a completely new physics tyre model (TGM) from scratch for this particular vehicle in order to give the best & closest driving experience possible (since there is no similar tyre TGM model available in RF2), which was one of the reasons that this car took so long to finish.

Some real life onboard videos of this car at Luogang Park:
https://www.bilibili.com/video/BV1hj411a7i9/
https://www.bilibili.com/video/BV1dN411T7pL/

And rysim's real life onboard videos in 2024's Formula Student Electric China event (with an upgraded version of this car):
https://www.bilibili.com/video/BV1WGmbY5Etr/
 
Hello, thank you guys for both mods, they go very well together, feels like mini game in rF2. It has been long time since I have driven something that doesn't require Hshifter and clutch. Not to mention gears shifting. It is very interesting, not to mention also having autocross track which is also unusual for me.

First of all, the track and the car are perfect, could go on a lot especially on the details of car, rotating fan, small details such as imperfections of stickers in cockpit boost up immersion a lot. I like that you guys made autocross cones the way you did.

I don't think I have done any valid lap, but it is very fun, especially after few laps when tires starts giving grip. It gets super fast. Getting under 1min10s with 40kw and a second or two faster with 60kw, it starts feeling like driving group B rally or late 80s high turbo F1 car such as Lotus98 in track this twisty and narrow. Accelerations and decelarations are insane. Every lap just gets more fun, but also really intense, you need to be well rested. I have driven on default conditions which were sunny and warm, and haven't done single valid lap yet.

I wish the car had little smaller turning circle. It is enough, but just barely. The turn in is extremely good, I think I have never understeered, but I also didn't try to make it more understeery with setup. In several places it really feels like I could go faster, and car could turn more in all those twisty narrow places.

With my casual Thrustmaster T300 wheel motor I had no feeling of car with 100% FFB, so I have increased it to 200-250%. There might be slight vibration happening, more noticeably when strongly accelerating. But it doesn't feel like an issue even with 250% ffb with my T300. It is unclear if it is directly tire related, even if it goes away with tbc tire, I feel like tbc tire in rF2 devmode overall simply transmits less forces, not to mention that without tire flex the geometry at all times is also different. That slight vibration could be due to some geometry or dampers setup aspect as well I guess, of course perhaps tire itself also could be slightly stiff and bouncy, even though the vibration is so minimal, if you wouldn't have pointed it out I wouldn't even think about it.

The tire starts to feel very good once it gets hotter, wears a bit and pressures elevate. But I think it probably is slightly too grippy, or perhaps slightly too insensitive for rubber pressure, while at the same time perhaps slightly lacking moments transmitted to wheel and chassis when it is being scrubbed. I would expect it to have little more understeering dynamics, brief moments of understeer and then biting into grip. Comparing to video that svictor posted it feels that it perhaps could be gripping slightly too much through adhesion, and not enough through mechanical keying into road surface roughness. I may not be right and it is hard to put it in words. Eitherway the tire to me feel great, and it is probably super close to how it should be.

I also tested 120kw motor in Azur. It was quite uneasy on very fast turns, even though it feels like it has more than enough grip. In Luogang though it feels nearly perfect once tires starts giving grip.
 
mantasisg said:
Hello, thank you guys for both mods, they go very well together, feels like mini game in rF2. It has been long time since I have driven something that doesn't require Hshifter and clutch. Not to mention gears shifting. It is very interesting, not to mention also having autocross track which is also unusual for me.

First of all, the track and the car are perfect, could go on a lot especially on the details of car, rotating fan, small details such as imperfections of stickers in cockpit boost up immersion a lot. I like that you guys made autocross cones the way you did.

I don't think I have done any valid lap, but it is very fun, especially after few laps when tires starts giving grip. It gets super fast. Getting under 1min10s with 40kw and a second or two faster with 60kw, it starts feeling like driving group B rally or late 80s high turbo F1 car such as Lotus98 in track this twisty and narrow. Accelerations and decelarations are insane. Every lap just gets more fun, but also really intense, you need to be well rested. I have driven on default conditions which were sunny and warm, and haven't done single valid lap yet.

I wish the car had little smaller turning circle. It is enough, but just barely. The turn in is extremely good, I think I have never understeered, but I also didn't try to make it more understeery with setup. In several places it really feels like I could go faster, and car could turn more in all those twisty narrow places.

With my casual Thrustmaster T300 wheel motor I had no feeling of car with 100% FFB, so I have increased it to 200-250%. There might be slight vibration happening, more noticeably when strongly accelerating. But it doesn't feel like an issue even with 250% ffb with my T300. It is unclear if it is directly tire related, even if it goes away with tbc tire, I feel like tbc tire in rF2 devmode overall simply transmits less forces, not to mention that without tire flex the geometry at all times is also different. That slight vibration could be due to some geometry or dampers setup aspect as well I guess, of course perhaps tire itself also could be slightly stiff and bouncy, even though the vibration is so minimal, if you wouldn't have pointed it out I wouldn't even think about it.

The tire starts to feel very good once it gets hotter, wears a bit and pressures elevate. But I think it probably is slightly too grippy, or perhaps slightly too insensitive for rubber pressure, while at the same time perhaps slightly lacking moments transmitted to wheel and chassis when it is being scrubbed. I would expect it to have little more understeering dynamics, brief moments of understeer and then biting into grip. Comparing to video that svictor posted it feels that it perhaps could be gripping slightly too much through adhesion, and not enough through mechanical keying into road surface roughness. I may not be right and it is hard to put it in words. Eitherway the tire to me feel great, and it is probably super close to how it should be.

I also tested 120kw motor in Azur. It was quite uneasy on very fast turns, even though it feels like it has more than enough grip. In Luogang though it feels nearly perfect once tires starts giving grip.
Click to expand...
Thank you for the very detailed testing and kind comment！I'm very happy that things goes well on your side.
And yes, the tire is a little bit too grippy because I want to weaken the understeer feeling the real car has and try to make it more "fun".The circuit is a little bit smaller than in real life, so you will want to have a smaller turning circle and that's also why I set the car more oversteer than in real life.
But if you want to make the car more understeer,you can increase the rear wing and adjust the suspension settings,there will be a significant change in car behavior I promise.
I'm still learning in making tire physics.In future update I will stiffen the tire sidewall a little bit,reduce the static grip and so on,right？;)
 
Last edited:
rysim abd said:
Thank you for the very detailed testing and kind comment！I'm very happy that things goes well on your side.
And yes, the tire is a little bit too grippy because I want to weaken the understeer feeling the real car has and try to make it more "fun".The circuit is a little bit smaller than in real life, so you will want to have a smaller turning circle and that's also why I set the car more oversteer than in real life.
But if you want to make the car more understeer,you can increase the rear wing and adjust the suspension settings,there will be a significant change in car behavior I promise.
I'm still learning in making tire physics.In future update I will stiffen the tire sidewall a little bit,reduce the static grip and so on,right？;)
Click to expand...

Very good bunch of mods, thank you.

My favorite part driving fast at Luogang track is the final turn, at full power IMO it gives super realistic moment of oversteer. And every braking is also very exciting as car brakes so well. To me car handling on the limit also is very good, there is a good balance of static grip vs kinematic grip, sliding. Maybe a bit biased towards static grip, right. Seems so to me, I wonder waht others think. Could as well say that it is perfect, I am just being picky :D The grip up sensation from slides in your tires is superb, it must not be lost, change anything only if it could be made even more pronounced without making the car overly twitchy. I would suggest perhaps trying giving a pinch more rubber sensitivity, but that also can make car worse, on the other hand perhaps it could be a positive exciting change with slightly more dynamic slides and wheelspins, but it probably also depends.

Yes, I should try more setup options next time, I saw that setup customisation level in this mod is very good. And I surely believe that setup changes will make siginificant differences, usually that heppens with good dynamic tires and aerodynamics.

Almost forgot. I think it would be uselful to raise drivers eyes/seat level couple centimeters.

Back to tires. I have never done a tire from scratch, never ran tests with ttool. To me your tire is amazing. I can't remember last mod that got all from scratch made tire. A lot of modders doesn't even do anything with real time paramters beyond friction coefficients. So this is very good work. Tires in rF2 can be so great !

Looking forward to next time, I'll be exploring setup. Also I will be exploring rain tire, which is another very interesting subject. I think the wet conditions in a way helps to make tires more realistic, as it is good test of mechanical keying into roughness of tires, as adhesion is not good on wet surface.
 
You must log in or register to reply here.
Back
Top